Knitting machine



Dec. 28, 1937. J. KESSLER 2,103,852

KNITTING MACHINE Filed 25, 1935 3 Sheets-Sheet 1 lNVENTOR duz /us K55 LER J. KESSLER KNITTING MACHINE Dec. 28, 1937.

Filed Aug. 25, 1935 3 Sheets-Sheet 2 INVENTOR duuus KEssLER? TORNEY 28, 1937. J. KE'S'SLER ,3

7 KNITTING MACHINE Filed Aug. 23, 1955 s Sheets-Sheet :5

l N VENTO R duz ms KESSL ER AT ORNEY 5 mechanism, etc.

Patented Dec.28,1937

UNITED S ATES PATENT OFFICE Julius Kessler, Brooklyn, N. Y. Application August 23,1935, Serial No. 37,;413

3Claims.

This invention relates to knitting machines and more particularly to Galon machines for the knitting of curtains, trimmings and the like.

Machines of this type are old and well-known and have been in use, substantially without change, for many decades. As is well-known by those skilled in this art, a machine of this type includes a main camshaft having a plurality of cams for operating the various moving portions of the machine, to wit:the needle bar, yam rod fork, and take-up rolls. The machine also includes certain other cams for operating the warp bar, the pattern chain advancing and reversing Heretofore the machine performed one complete cycle of operation for each revolution of the drive shaft and of the main camshaft, and, of course, the capacity of the machine was limited to the maximum speed obtainable consistent with good machine practice. The present invention seeks to increase the capacity of a Galon machine without, however, increasing the speed of the drive shaft or camshaft. This broadly stated object of the invention may be realized in several ways as will later be more fully detailed. In a general way, however,

' moving parts, and operating the pattern chains at each end of the machine twice for each revolution of the main and camshaft; or providing double lobed cams and operating the pattern chains alternately instead of simultaneously as has heretofore been the practice.

Each of the above methods of providing increased capacityis more particularly adapted for particular designs or patterns, and the machines may be arranged so only a change 'in gearing is necessary to convert the machine from one methed to the other.

Another object of the invention is to provide a pattern chain at each end of the machine which,

for any particular design of knitted fabric, is'

in accordance with the invention, parts being omitted for clearer illustration.

Fig. 2 is a front view of the warp bar rocking mechanism.

Fig. 3 is a similar view of the pattern chain Fig. 6 is, a fragmentary detail of the two to one drive between the drive shaft and one of the pattern chains. v

The machine, in the usual manner, is provided with a. needle bar A, a warp bar B, a take-up roll C, yam'rods D, yarn rod forks E for elevating and lowering the yarn rods, pattern chains F and G, and drive mechanism H for advancing and reversing the pattern chains. 1

The machine is driven by means such as the pulley ID, or may be operated during adjustments by the handwheel I l, suitable clutch means I! being incorporated to permit this.

By either of the above means, the shaft I3 is driven and on this shaft is mounted a miter gear i4 meshing witha similar gear IS on a camshaft IS. The other end of the camshaft is provided with a miter gear I'l meshing with a' similar gear IS on a shaft l9 parallel to the shaft I3. I

. In accordance with the invention, the three shafts l3, l6 and i9 are provided with cams for operating the various moving portions of the machine and in order to provide the machine with increased capacity at the normal rotational speed of the mentioned shafts, all of the cams are formed as double lobed cams as will hereafter be seen.

with particular reference to Figures 1 and 4, the camshaft I6 is provided with one or more double lobed cams 20, each acting on a roller 2| carried on an arm 22 fixed to a common rockshaft 23. The arms 22 are each connected at 2 4 to a drag link 25 pivotally connected at 26' to the needle bar A. From the foregoing it is apparent that each revolution of the camshaft IE will cause two movements of the nedle bar A towards" the left (as seen in Figure 4).

The means for moving the needle bar to the right in a similar manner comprises a double lobed cam 21 acting on a roller 28 on a bracket 29 fixed to the needle bar, said bracket being provided withan extension 30 which is guided as by means of the grooved wheels 3|.

The means for elevating the yarn rod forks E twice for each revolution of the camshaft l6,

comprises one or more double lobed cams I2,

each acting on a roller 33 carried on an arm 34 fixed on a rockshaft 35, an arm 36 on each end of the rockshaft being pivotally engaged with the yarn rod forks for this purpose.

The take-up roll C is advanced twice for each revolution of the camshaft by means comprising the double lobed cam 31 acting on the roller 38 on an arm 39 on the rockshaft 23, the, arm 39 being formed with a lower extension 40, the end ll of which, through a link 42 is connected to a lever 43 pivotally engaged on the stud 44. The arm 43, at its free end, is provided with a pawl 45 engageable with the teeth of a ratchet wheel 46 mounted for free rotation on the stud 44. Fixed with the ratchet wheel there is preferably provided a pinion 41 meshing with a gear 48 fixed with thetake-up roll'C. It will be noted that engagement of one ofthe lobes of thecam 31 with the roller 38 will .muse the pawl 45 to advance the ratchet wheel and hence the take-up roll, the recovery action of the pawl beingaccomplished by means such as the spring 49. Suitable means, not shown, may be employed to retain the parts in advanced position during th recovery motion of the pawl.

In the action of the machine, the warp bar 3 is both rocked and moved endwise, these movements beingaccomplished twice for each revolution of the shafts l3 and i9. 30-

The rocking of the warp bar is attained through the medium of a double lobed cam 50 on the shaft l9 acting on a roller 5| on a slide member 52, guided in a bracket 53 and urged upwardly by means of a spring 54. The slide 52, which is also slotted so as to be guided by the shaft I9, is provided with a lateral pin 55 which engages an arm 56 on the warp bar. Each reciprocation of the slide will rock the'arm 56 and also the, warp bar.

Endwise' movement of the warp bar is accomplished by means of a double lobed cam 51 on the shaft l3, said cam acting on a'roller 58 on a pivoted arm 59 against which the end of the warp bar impinges. A spring 60 is employed to maintain the roller against the cam at all times;

When the pattern chains F and G are to be rocked inwardly and outwardly simultaneously in the usual manner of operation, the drive 1 means therefor is shown in Figure 6 wherein a gear 8! is provided on the shafts l3 and I9, and

ismeshed with a half size gear 62 on a countershaft 63.

This countershaft is provided with a crank arm 64, which, through the medium of a link 65, is connected to a swinging arm 66 fulcrumed at 61. The arm 66, in'the usual manner, supports the two sprocket-like members 68 about which the pattern chain istrained.

In the foregoing manner the pattern chains F and G are simultaneously rocked inwardly and outwardly so the yarn rod actuators 69 may operate the yarn rods D in the usual manner but. twice for each revolution of the shafts l3,

l6 and g While this method of equipping a Galon knitting machine considerably increases the capacity thereof, "for certain types of designs of knitted fabrics, the machine may be made more eflicient inthat the pattern chains may be made smaller,

comprising less links.

Instead of having the chains rockinwardly together, it is contemplated, as shown in Figure 5, to move them inwardly alternately and in this way eliminate blank links, that is,-links which are not provided with actuators 69. In this event the gears 6| are each meshed with a similar or for two actions of the double lobed cams with which the machine is equipped.

Hence, a machine equipped with double lobed cams and with means for causing the pattern chains to operate alternately will attain a degree of efficiency, at least twice that of machines in present use, being faster and being easier to set up due to the saving in the number of links comprising each chain.

' Since machines as. at present used are pro-' vided with means for advancing and reversing the movement of the patternchains about their sprockets, the present invention also contemplates the provision of a double lobed cam H which is not illustrated since it is well-known, and which per se, does not form part of this invention. In Figure 3, however, the portions marked H generally illustrate some of the parts for accomplishing the advancing and reversing of the pattern chains.

As can' be seen from the foregoing, the present types of Galon' knitting machines have been, according to this invention, improved to a conv on the shaft l3 for actuating this mechanism. I

siderable degree. It is now possible to knit certain fabric designs by only employing one or two actuators on each end of the-machine, disconnecting, of course, the advancing means H. Also, it is possible to knit quite complicated designs into fabrics with half the number of actuators heretofore employed. And finally the speed of knitting has been doubled without increasing the speed of the drive means.

From the foregoing, it can readily be seen that changes, not involving invention, may be made by skilled persons, as for instance, one or more of the drive shafts, may be provided with double lobed cams, the others then being geared to rotate at twice the speedand provided with single lobed cams. For this reason the scope of the following claims should not be based on the present specific disclosure, but rather on the prior art.

What is claimed as new and desired to secure by Letters Patent, is:

1.- In a knitting machine having yarn rods, a

'3 main shaft for actuating said machine, a pattern chain on each end of the machine; a pair of pivoted pattern chain supporting members,

crank arms connected to said supporting members for moving said pattern chains synchronously but alternately toward and away from the yarn rods and power transmission means end of the machine, and means actuated from said drive shaft for simultaneously moving one pattern chain towards and the other pattern chain away from the machine to move a yarn rod in one direction before one actuation of the knitting instrumentalities and for simultaneously moving the said pattern chains in the opposite direction to move a yarn rod in a direction opposite to the first movement of a yarn rod before the second actuation of said knitting instrumentalities.

3. In a knitting machine, a drive shaft; knitting instrlnnentalities and during one revolution of the drive shaft, and for simultaneously moving the said pattern chains in the opposite direction to move a yam rod in' a direction opposite to the first movement of a yarn rod before the second actuation of said knitting instrumentalities and during the next revolution of said drive shaft.

JULIUS KESSLER. 

